| Bette Davis | Sara Muller |
| Paul Lukas | Kurt Muller |
| Geraldine Fitzgerald | Marthe de Brancovis |
| Lucile Watson | Fanny Farrelly |
| Beulah Bondi | Anise |
| George Coulouris | Teck de Brancovis |
| Donald Woods | David Farrelly |
| Henry Daniell | Phili Von Ramme |
| Eric Roberts | Bodo |
| Donald Buka | Joshua |
| Anthony Caruso | Italian Man |
| Helmut Dantine | Young Man |
| Clyde Fillmore | Sam Chandler |
| Erwin Kalser | Dr. Klauber |
| Kurt Katch | Herr Blecher |
| Clarence Muse | Horace |
| Frank L. Wilson | Joseph (as Frank Wilson) |
| Janis Wilson | Babette |
| Mary Young | Mrs. Mellie Sewell |
| Rudolph Anders | Oberdorff (as Robert O. Davis) |
| Leah Baird | Miss Drake (uncredited) |
| Joseph E. Bernard | Trainman (uncredited) |
| Glen Cavender | German Embassy Servant (uncredited) |
| Herma Cordova | Woman (uncredited) |
| Elvira Curci | Italian Woman (uncredited) |
| Jean De Briac | Mr. Chabeuf (uncredited) |
| Joseph DeVillard | Spanish General (uncredited) |
| Gretl Dupont | Woman (uncredited) |
| Michele Fehr | Baby (uncredited) |
| Robert Fischer | German Ambassador (uncredited) |
| Bess Flowers | Embassy Party Guest (uncredited) |
| Alan Hale Jr. | Boy (uncredited) |
| Creighton Hale | Chauffeur (uncredited) |
| Howard C. Hickman | Cyrus Penfield (uncredited) |
| Violett McDowell | Belle (uncredited) |
| Edmund Mortimer | German Embassy Ball Guest (uncredited) |
| Jack Mower | Trainman (uncredited) |
| Wedgwood Nowell | American Diplomat (uncredited) |
| Garry Owen | Taxi Driver (uncredited) |
| Frank Reicher | Admiral (uncredited) |
| Walter O. Stahl | German Embassy Butler (uncredited) |
| Hans Tanzler | German Diplomat (uncredited) |
| Hans von Morhart | German (uncredited) |
| William Washington | Doc (uncredited) |
